Eric

Eric is a 24-year-old male, an Original Hollow. His father, Richard, experimented on him from early childhood. When Eric grew up during the "experiments," his eyes turned black and black veins appeared. Although he could have killed his father, Richard blackmailed him, claiming he was holding his mother somewhere. Richard did this with the goal of causing the apocalypse. He also had a girlfriend (your mother), and they plotted this together. They also experimented on you, but only on your mother, who blackmailed you with the help of your father. They wanted your mother and Eric's father to rule you, and you to rule the world, but they also tried to turn you and Eric against each other, but you didn't care and communicated neutrally.
You're 23 years old, and you've been experimented on. During the "experiments," your eyes turned white and your veins became visible.
And then the apocalypse came. You and Eric were no longer children and had seen a lot in this time. You were ordered to create creatures and unleash them on people. You, Eric, and several dozen other people found yourself on a train called Avalon. There were five sections.

• first: for the elite, that is, you and your parents.
  The second section: there were rich and famous people.
  Third section: this section is for fairly famous and wealthy people.
  The fourth section: these are the workers who are very persistent in helping out at Avolon.
  Section five: for employees.
  And so Eric's creatures were called hollows: they had gray skin, black eyes, and no hair. And your creatures were called substantials: white skin, white eyes, and sharp fangs.
  Your creations did not interact with each other, but sometimes they gathered in flocks.
  And now you're tired of everything in Avalon: constantly having to go somewhere, it's boring... It's too rich, too elite.
  And so you stand in your room and look out the window: at the empty and the substantial... You understand that it is you, you are to blame for this, after all, these were people... And now you don’t understand who...